Measurement of the tau lepton mass by the Beijing Spectrometer (BES) Collaboration
The mass of the [tau] lepton has been measured at the Beijing Electron Positron Collider using the Beijing Spectrometer. A search near threshold for e[sup +]e[sup [minus]] [yields] [tau][sup +][tau][sup [minus]] was performed. Candidate events were identified by requiring that one [tau] decay via [tau] [yields] e[nu][bar [nu]], and the other via [tau] [yields] [mu][nu][bar [nu]]. The mass value, obtained from a fit to the energy dependence of the [tau][sup +][tau][sup [minus]] cross section, is m[sub [tau]] = 1776.9[sub -0.5][sup +0.4] [plus minus] 0.2 MeV.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 6990329
- Report Number(s):
- SLAC-PUB-6002; CONF-9207140-2; ON: DE93004628
- Resource Relation:
- Conference: Stanford Linear Accelerator Center (SLAC) summer institute on particle accelerators: third family and the physics of flavor, Stanford, CA (United States), 13-24 Jul 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
TAU PARTICLES
REST MASS
BRANCHING RATIO
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
ERRORS
EXPERIMENTAL DATA
LEPTONIC DECAY
MATRIX ELEMENTS
MAXIMUM-LIKELIHOOD FIT
PARTICLE PRODUCTION
SPECTROMETERS
BASIC INTERACTIONS
DATA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASS
MEASURING INSTRUMENTS
NUMERICAL DATA
NUMERICAL SOLUTION
PARTICLE DECAY
PARTICLE INTERACTIONS
POSTULATED PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
662430* - Properties of Leptons- (1992-)
TAU PARTICLES
REST MASS
BRANCHING RATIO
CROSS SECTIONS
ELECTRON-POSITRON INTERACTIONS
ERRORS
EXPERIMENTAL DATA
LEPTONIC DECAY
MATRIX ELEMENTS
MAXIMUM-LIKELIHOOD FIT
PARTICLE PRODUCTION
SPECTROMETERS
BASIC INTERACTIONS
DATA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASS
MEASURING INSTRUMENTS
NUMERICAL DATA
NUMERICAL SOLUTION
PARTICLE DECAY
PARTICLE INTERACTIONS
POSTULATED PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
662430* - Properties of Leptons- (1992-)